Water Activity Meter Standards

Accurate water activity measurement starts with reliable calibration. These single-use water activity standards deliver traceable, precise reference points across the full measurement range, ensuring your instrument performs when it matters most.

Each standard is supplied in a convenient pack of 50 capsules and includes a traceable certificate of analysis, ready for immediate use with no preparation required. Salt solutions are formulated with lithium chloride (LiCl), sodium chloride (NaCl), or potassium chloride (KCl) depending on the target activity level, while the 1.000 aw standard uses deionized water.

Available individually at seven certified activity levels or as a mixed kit covering the full range, these standards are suitable for routine instrument verification, calibration checks, and method validation across food, pharmaceutical, and laboratory applications.

Features

• Seven certified activity levels from 0.250 to 1.000 aw
• Formulated with LiCl, NaCl, KCl, or H2O salt solutions matched to target range
• Single-use capsule design eliminates cross-contamination risk
• Supplied with a traceable certificate of analysis
• Assorted kit option for full-range coverage in a single pack

Specifications